I've been doing videos with a white screen background, and placing in multiple instances of people.
I get a slight gray border line around frames placed within the larger frame.
I'll attach a snap shot of what I mean...
In the past, I would painstakingly mask these borders out, but I've "heard" there is a setting somewhere that gets rid of them. Does anyone know of this?
Thanks!
Walt

Don't know Vegas but since the lines are straight can't you just crop or do they stay even after the crop? Also looks like the guy on the right is framed too close as his foot is cut off so cropping would just make it worse.
Other thought is do do a key. Instead of blue or green just specify white.

Thanks for the input. Unfortunately, when I crop each picture, I just get a new border around the newly cropped image. This is made worse by the fact that I'm panning between characters in post, so the borders are moving all over, and that makes it nearly impossible to mask them out etc.
Thanks though!

One thing that struck me, you mentioned that re-cropping simply yields a newly placed grey line? These are multiple videos, shot on a white screen that don't show these lines at all when viewed individually? You're compositing them against a white background media?

I've tried what you've done, with video and stills and had no such problems.

It almost sounds like this is a teeny-tiny 2D shadow or glow peeking through in the background.

Like, why wouldn't any time you select "Save snapshot to file" automatically save the best quality picture?

It DOES - at least it does now in the latest versions. It's been that way for well over a year now (can't remember if it was added in late 8's or early 9's)

But I can see where it would be nice to get snapshots at lower resolutions as well - depending on your reason for wanting the snapshot! I kind of liked it the old way as I could control the resolution I got and could easily use a script to get "full" resolution without having to worry about changing the various settings or switching them back.

Thanks for telling us the ultimate solution. The Pre/Post toggle flag determines whether the effect is applied to the image BEFORE it does the pan/crop or AFTER it does the pan/crop. It's not an overly well-known feature but is very important.